CN2525526Y - Carrier wave electric meter - Google Patents
Carrier wave electric meter Download PDFInfo
- Publication number
- CN2525526Y CN2525526Y CN 02206713 CN02206713U CN2525526Y CN 2525526 Y CN2525526 Y CN 2525526Y CN 02206713 CN02206713 CN 02206713 CN 02206713 U CN02206713 U CN 02206713U CN 2525526 Y CN2525526 Y CN 2525526Y
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- circuit
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- ammeter
- electric meter
- carrier wave
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Abstract
The utility model belongs to a carrier wave electric meter, which comprises a plurality of ammeters which is arranged in an ammeters box in parallel, a high frequency stopping wave device which consists of a inductance and a capacitance connected in parallel with inductance and is connected in zero line in series in each electric meter and a photoelectric isolation circuit board which is arranged on the data receiving and sending end of a single chip in each electric meter, wherein, each electric meters is connected with a carrier wave adapter through the photoelectric isolation circuit by a data receiving and sending bus. The carrier wave adapter comprises a power source circuit, a sending front-class amplifying circuit, a sliding malacostraca amplifying circuit, a receiving amplifying circuit, a modem circuit and a data exchanging circuit. The carrier wave electric meter can achieve the real time metering, power-on and power-off for all electric meters when the low voltage network structure is relatively complex and has more connected electric meter and reduce the configuration cost of the electric meter.
Description
Technical field
The utility model relates to the power supply instrument, is a kind of carrier electric energy meter of the user's of having power on/off control function.
Background technology
At present, be the carrier electric energy meter that core is controlled, measured with the single-chip microcomputer, need be the carrier current channel of core inner setting of every ammeter, in order to the remote meter reading of realization low voltage electric network and the control of user's power on/off with modulator-demodular unit ST7536.Because of the attenuation of carrier current channel to carrier signal, the quantity of the ammeter that connects is very restricted, when the low voltage electric network complex structure or the institute ammeter that connects more for a long time, can not realize checking meter in real time and whole power on/off of users of whole ammeters, and also increase the production cost of every ammeter to a great extent.
The utility model content
The purpose of this utility model is at the problems referred to above, and provide a kind of carrier electric energy meter, this electric energy meter can and insert ammeter more for a long time in low voltage electric network structure relative complex, realization is checked meter in real time to all ammeters in the same change platform district, real-time power on/off, and the production cost of the electric energy meter that is disposed is reduced relatively.
For achieving the above object, the utility model provides a kind of carrier electric energy meter, it includes the several piece ammeter that is in parallel that places in the ammeter box, the high-frenquency current blocking device that serial connection is made up of the inductance shunt capacitance in every ammeter zero line, its single-chip data sending and receiving end disposes the photoelectric isolating circuit plate in each ammeter, and each ammeter connects by power circuit, sends preamplifying circuit, slip Class A amplifying circuit, receives the carrier adapter that amplifying circuit, modem circuit and exchanges data circuit are formed through the data transmit-receive bus by photoelectric isolating circuit.
This carrier electric energy meter has following advantage:
1, adopts the design proposal of every shared cover carrier adapter of the several piece ammeter in the table case, compare with the design proposal that disposes carrier current channel in every ammeter respectively, can reduce the attenuation of ammeter carrier current channel in parallel to carrier signal, improve electric energy meter to the adaptive faculty of complicated low voltage electric network structure with to the restriction of the ammeter quantity that inserted, and the production cost of every ammeter is reduced significantly.
2, in the zero line of ammeter, be connected in series high-frenquency current blocking device, can reduce the attenuation of customer charge carrier signal.
3, the power circuit of adapter adopts capacity voltage dropping circuit, helps reducing the volume of adapter; Employing VMOS pipe is amplified in the inside carrier Class A, helps increasing outgoing carrier voltage; The transceive data switched circuit adopts phase inverter to connect with the 485 communication circuit that adopt usually and compares, and because of need not installing single-chip microcomputer additional in adapter, and makes the circuit of adapter simple, the functional reliability raising.
Description of drawings
Fig. 1 is that this carrier electric energy meter ammeter connects circuit diagram with adapter;
Fig. 2 is this carrier electric power table adapter block scheme;
Fig. 3 is this carrier electric energy meter optical isolation board circuit diagram;
Fig. 4 is this carrier electric energy meter carrier adapter circuit theory diagrams.
Embodiment
Provide as accompanying drawing 1, this carrier electric energy meter includes several piece ammeter 1, each ammeter is in parallel and is installed in the ammeter box, in the zero line of each ammeter, be serially connected with the high-frenquency current blocking device 2 that constitutes by the inductance shunt capacitance, its single-chip data sending and receiving end disposes photoelectric isolating circuit plate 3 in each ammeter, and each ammeter connects carrier adapter 4 by photoelectric isolating circuit through the data transmit-receive bus.When concrete configuration, the frequency of operation of trap should be the transmission carrier frequency frequency of carrier adapter, and the coil of inductor should be added with FERRITE CORE, and the winding wire sectional area should be greater than 2.5mm
2, its electric capacity should be selected stability CBB type electric capacity preferably for use.
Provide as accompanying drawing 2 block schemes, the adapter of this carrier electric energy meter is made up of power circuit A, transmission preamplifying circuit B, slip Class A amplifying circuit C, reception amplifying circuit D, modem circuit E and exchanges data circuit F.Wherein power circuit A with alternating current 220V voltage transitions one-tenth+150V ,+5V ,-the 5V direct current provides power supply for other circuit.Low voltage electric network 220V goes up the carrier signal of being come by data acquisition unit and amplifies the back to modulator-demodular unit E to receiving amplifying circuit D, modulator-demodular unit E is demodulated to data-signal to exchanges data circuit F with carrier signal, the exchanges data circuit is to data bus X, Y, then by bus X, Y to each ammeter.The data that each ammeter is beamed back through X, Y data bus to exchanges data circuit F, by the exchanges data circuit to modulator-demodular unit E, modulator-demodular unit E becomes data into CF signal, amplifies to sending preamplifying circuit B, amplifies back to low voltage electric network 220V after the amplification to the Class A amplifying circuit C that slides.
The physical circuit of adapter is provided by accompanying drawing 4 in this carrier electric energy meter, it has power circuit A, sends preamplifying circuit B, slip Class A amplifying circuit C, receives amplifying circuit D, modem circuit E and several parts compositions of exchanges data circuit F, and the circuit composition and the principle of work of its each several part are as follows:
Power circuit A: linking with the alternating current 220V live wire is connected to inductance 13, the other end of inductance 13 connects electric capacity 14, resistance 15 and resistance 23 respectively, the other end of the other end of electric capacity 14 and resistance 15 and connect after be connected to resistance 16, the other end of resistance 16 connects the negative pole of diode 17 and the positive pole of diode 18 respectively, the positive pole of diode 17 connects the positive pole of electric capacity 19 and voltage stabilizing diode 20, and the minus earth of the other end of electric capacity 19 and voltage stabilizing diode 20 connects the zero line of alternating current 220V simultaneously; The negative pole of diode 18 connects the negative pole of electric capacity 21 and voltage stabilizing diode 22, the plus earth of the other end of electric capacity 21 and voltage stabilizing diode 22; Diode 17 anodal output-5V, the negative pole output+5V of diode 18 is for circuit at different levels provide power supply.The positive pole of another terminating diode 24 of resistance 23, the negative pole of diode 24 connect the collector of electric capacity 25, resistance 26, triode 29 and the collector of triode 30, the other end ground connection of electric capacity 25 respectively; The other end of resistance 26 connects the base stage of triode 29 and the negative pole of voltage stabilizing diode 27 respectively, and the positive pole of voltage stabilizing diode 27 connects the negative pole of voltage stabilizing diode 28, the plus earth of voltage stabilizing diode 28; The emitter of triode 29 connects the base stage of triode 30, and the emitter of triode 30 connects electric capacity 31, the other end ground connection of electric capacity 31; Emitter output+150V the voltage of triode 30 provides power supply for slip Class A amplifying circuit.
Send preamplifying circuit B: this circuit is to amplify to the Class A of sliding after the carrier signal that modulator-demodular unit ST7536 comes is amplified.Its circuit bank becomes: the ATO of modulator-demodular unit ST7536 is connected to resistance 32, the end of oppisite phase of the other end connecting resistance 33 of resistance 32, resistance 35 and amplifier 34, the other end ground connection of resistance 33, the output terminal of another termination amplifier 34 of resistance 35, the in-phase end ground connection of amplifier 34; The carrier signal that amplifier 34 output has been amplified is given slip Class A amplifying circuit.
Slip Class A amplifying circuit C: deliver in the 220V AC network after the carrier signal that this circuit will send preamplifying circuit is amplified, the bias voltage of power tube 45 carries out rectification from carrier signal and obtains, when carrier-less signal, power tube 45 ends, and is operated in the Class A magnifying state when sending carrier signal.Its circuit bank becomes: amplify signal that amplifier 34 outputs bring in to electric capacity 36 and electric capacity 43 from sending prime, the other end of electric capacity 36 connects the negative pole of diode 37 and the positive pole of diode 38, the plus earth of diode 37 respectively; The negative pole of diode 38 connects electric capacity 39, resistance 40 and resistance 41, the other end ground connection of electric capacity 39 and resistance 40; The grid of another termination power tube 45 of resistance 41 and the negative pole of diode 42, the plus earth of diode 42; The grid of another termination power tube 45 of electric capacity 43, the source electrode connecting resistance 44 of power tube 45, the other end ground connection of resistance 44; The drain electrode of power tube 45 connects an end of electric capacity 46 and frequency regulating transformer 47 primary coils, connects+150V voltage after the other end of its coil and electric capacity 46 are in parallel; The secondary coil of frequency regulating transformer has three joints, and its lower end ground connection, indirect are to the live wire that receives amplifying circuit, last termination capacitor 48, electric capacity 48 another termination 220V.
Reception amplifier D: this circuit amplifies the carrier signal of receiving.Its circuit bank becomes: be connected to resistance 49 with the secondary coil intermediate ends of the high-frequency transformer 47 of slip Class A amplifying circuit, the end of oppisite phase of the negative pole of resistance 49 another terminating diodes 50, the positive pole of diode 51, resistance 53 and amplifier 52, the minus earth of the positive pole of diode 50 and diode 51; The output terminal of another termination amplifier 52 of resistance 53, the in-phase end ground connection of amplifier 52, the output terminal connecting resistance 54 of amplifier 52, the other end connecting resistance 55 of resistance 54 and the RAI of ST7536 end, the other end ground connection of resistance 55.
Modem circuit E: it adopts general ST7536 modulator-demodular unit.
Exchanges data circuit F: this circuit is used for the transceive data exchange between each ammeter and the modulator-demodular unit.Its circuit bank becomes: the data of bringing in from the RXD of modulator-demodular unit are connecting resistance 56 and resistance 57 respectively, the input end of another termination phase inverter 58 of resistance 57, the output terminal connecting resistance 60 of phase inverter 58 and resistance 61, another termination+5V of resistance 60; The input end of another termination phase inverter 62 of resistance 61, the transmitting terminal negative pole of the output termination optocoupler 63 of phase inverter 62, the anodal connecting resistance 88 of its optocoupler 63 transmitting terminals, another termination+5V of resistance 88; The emitter of optocoupler 63 receiving ends connects-5V, and the current collection collection of optocoupler 63 receiving ends connects bus X end, and bus X holds to each ammeter; The input end of another termination phase inverter 59 of resistance 56, the positive pole of the output terminal connecting resistance 67 of phase inverter 59 and optocoupler 87 transmitting terminals, another termination+5V of resistance 67; Be connected to resistance 64 with bus X end, the other end of resistance 64 is to the input end of phase inverter 65, the negative pole of the output terminal connecting resistance 66 of phase inverter 65 and optocoupler 87 transmitting terminals, another termination+5V of resistance 66; The collector of optocoupler 87 receiving ends connects+5V; Optocoupler 87 emitter connecting resistances 68 and electric capacity 70, the other end ground connection of resistance 68; The negative pole of another terminating diode 69 of electric capacity 70 and the positive pole of diode 71, the plus earth of diode 69; The negative pole of diode 71 connects electric capacity 72, resistance 73 and resistance 74, the other end ground connection of the other end of electric capacity 72 and resistance 73; Another termination capacitor 75 of resistance 74 and the base stage of triode 76, the other end ground connection of electric capacity 75; The grounded emitter of triode 76, the RX/TX end of the collector connecting resistance 86 of triode 76, resistance 85 and modulator-demodular unit, another termination+5V of resistance 86; The input end of another termination phase inverter 84 of resistance 85, the output terminal of phase inverter 84 is connected to the output terminal of phase inverter 79; Be connected to resistance 77 and resistance 78, another termination+5V of resistance 77 with bus X end; The input end of another termination phase inverter 79 of resistance 78, the output terminal of phase inverter 79 are connected to resistance 80 and resistance 81 1 ends, another termination+5V of resistance 80; The input end of another termination phase inverter 82 of resistance 81, the output terminal connecting resistance 83 of phase inverter 82 and the TXD of modulator-demodular unit end, another termination+5V of resistance 83.
Claims (1)
1, a kind of carrier electric energy meter, include and place the several piece ammeter (1) that is in parallel in the ammeter box, it is characterized in that: the high-frenquency current blocking device (2) that serial connection is made up of the inductance shunt capacitance in every ammeter (1) zero line, its single-chip data sending and receiving end disposes photoelectric isolating circuit plate (3) in each ammeter, and each ammeter connects by power circuit, sends preamplifying circuit, slip Class A amplifying circuit, receives the carrier adapter (4) that amplifying circuit, modem circuit and exchanges data circuit are formed through the data transmit-receive bus by photoelectric isolating circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02206713 CN2525526Y (en) | 2002-02-07 | 2002-02-07 | Carrier wave electric meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02206713 CN2525526Y (en) | 2002-02-07 | 2002-02-07 | Carrier wave electric meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2525526Y true CN2525526Y (en) | 2002-12-11 |
Family
ID=33687975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02206713 Expired - Fee Related CN2525526Y (en) | 2002-02-07 | 2002-02-07 | Carrier wave electric meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2525526Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103837737A (en) * | 2012-11-27 | 2014-06-04 | 国际商业机器公司 | Method and device for measuring energy consumption of electronic equipment |
-
2002
- 2002-02-07 CN CN 02206713 patent/CN2525526Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103837737A (en) * | 2012-11-27 | 2014-06-04 | 国际商业机器公司 | Method and device for measuring energy consumption of electronic equipment |
| CN103837737B (en) * | 2012-11-27 | 2016-12-21 | 国际商业机器公司 | The method and apparatus measuring the energy expenditure of electronic equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |